PDA

View Full Version : Tubes / Valves

Pages : 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 [25] 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79
  1. 6SJ7(6J8) + 6v6 (6P6S) SE
  2. Wavebourn Tower-III High-end hybrid amp
  3. Question - Closest Russian Analog of 12BH7A
  4. Help understanding the PowerDrive circuit anaylsis
  5. Aikido pre
  6. Fixed bias: Pots near supply or tubes?
  7. Oh, those 12AU7s again...
  8. Plitron LOW Power OPT...
  9. Has anyone used The Guiguang 300B?
  10. anyone have any el86 circuits laying around?
  11. ok, power supply question, 230v - 117v conversion
  12. Big lot of tubes purchased this morning
  13. Tamura HM-1
  14. Tube Amp Design Question...
  15. Cathode Bias questions
  16. Tube Hybrid Shunt Regulator ... will this even work?
  17. Forgive me TubeLab ... I have sinned
  18. Broskie regulator oscillates
  19. Yushang-Audio Classic 16.6
  20. Tube PreAmplifier Kit suggestions..
  21. Sourcing Chassis Access Panels
  22. Running 4 ohm speakers with my Simple SE
  23. YAQIN SD-32A Tube CD/HDCD Player
  24. Cavalli OCL Buffer
  25. wooohooo! Three Rowe AMI amps for $200NZD!
  26. Quick Volume pot question
  27. Basic choke quality/sonic benefit questions
  28. Tubelab SE buzzing noise from the speaker
  29. lighspeed attenuator w/Simple SE AMP
  30. Tube rectifiers for Dummies
  31. help on a SE 4 channel tube amp for auto?
  32. Audio Output Transformers
  33. K-502 Help
  34. High gain guitar preamp kits!
  35. First post, first project RH84
  36. Source for tube cages?
  37. Simple SE optimum layout for hum
  38. Audio Transformers - Help
  39. Gran Tenor
  40. Toroidal Output Tranformers
  41. Cathode Follower confusion
  42. Tube newbie problem
  43. Replacement of KT88's. No mods' necessary?
  44. Phase splitter types
  45. Yaqin VK-2100 mods
  46. Heptode oscillators
  47. tube amp repair in DFW area
  48. A novice scope user - measuring noise?
  49. Hickok 600A & KT88
  50. Multifilar winding
  51. Measuring Hi-Fi Amplifiers
  52. Help with 30A5 tube amp schematic
  53. simple se troubleshooting
  54. 6SN7 operating points input gain stage and concertina
  55. looking for pentodes for scope deflection
  56. Cary 845 schematics
  57. newbie simple SE issue
  58. Power Transformer 110/230V Windings Question
  59. OPT Voltage spike protection with zeners
  60. IRIS OTL info
  61. Precise 111 tube tester - missing tubes
  62. ping yves
  63. Filters
  64. 2X2 as amplifier rectifier
  65. SPMSU for heater supplies
  66. Shipping Tube Gear
  67. Amplifier squeel at zero volume
  68. mercury rectifier for electrostatic bias
  69. My little coupling-cap-test in a UL-70W-Amp
  70. Electra-Print 300BDRD
  71. K-502... upgrading the OPT's with Hammonds
  72. Tube eq or tone control - how to design it?
  73. Help, strange glowing in KT88
  74. Need opinions about this tube circuit
  75. Custom designed transformer for Andrea Ciuffoli 6c33c OTL AMP....
  76. Max current for Edcore GXSE10-8-2.5K
  77. And for the man who has everything....
  78. 1J6G recommended operating point?
  79. DHT bias and filament supply in one?
  80. Tubelab Simple SE Sound Quality
  81. 3d amp modelling (for solidworks)
  82. RSC Stereo Ten.
  83. Weird Bias on Simple SE
  84. Help - noisy phono stage
  85. 2A3 Max Grid Current Rating?
  86. Futterman style 6AS7 OTL with other tubes
  87. Low/Mid-Watt Amps
  88. Calling all builders of the Swenson/Pimm HV Reg
  89. AZ1 problem: broken metal part
  90. More Grunt from Aikido Needed to drive PL509's
  91. Correct OPT and other adjustments on old Bogen amp
  92. Ebl 21 Se Amplifier
  93. OT primary impedance calculation
  94. Akai M5?
  95. Identify the DHT
  96. Fountek Altitude 3500, any opinions?
  97. 31 tube in output
  98. dynaco system- volume remains
  99. Left channel BAD in stereo! HELP please! It's my first tube set
  100. OPT with power transfrormer core
  101. 300b dpa
  102. IV single stage inverting Feedback Amp
  103. TechTubes - The return of Blackburn
  104. simple se how to wire a auxiliary cap
  105. Tradeoffs in analog circuit design, and so on...
  106. Has anyone Received The new Techtubes yet?
  107. 6P3S-E in place of 6V6
  108. EL34, KT88, High Voltage?, VTL..
  109. 100W 6L6 amp sounds harsh at high Volume
  110. Hickok 533 / 600 settings for 6GM8 / ECC86
  111. Need help: amp blowing fuses
  112. Best voltage reference device for a cascode BJT CCS?
  113. Tube power amp noise problem
  114. tube oscillator help.
  115. Finally have some big chokes, how would you use them?
  116. Tube amplifier
  117. Mesa Boogie bass amp quiet
  118. 12AX7 heater filament resistance
  119. Choke input LC chain questions..Q?, minload?
  120. LED bias for 12ax7 oscillator
  121. Yaqin VK-2100 hybrid running 4 ohm speakers
  122. VR shunt regulator or RC filter
  123. Screen Mode Mesh Plate?
  124. EL34 simple push pull class B : why 100W ?
  125. Scored Some Bendix 5992
  126. Tube Substitutions Online ???
  127. Resistor pack for tube amp
  128. Tube Phono Preamp PCB Ebay? are these any good
  129. Testing an EL84 as a 6V6
  130. Low Voltage (~16-20V) Tube
  131. Basic Oscilloscope question
  132. Cathodyne Questions
  133. 6922 for a Noob
  134. Cathodyne Phase splitter simulation problem?
  135. How would you improve this EL84 SE circuit?
  136. Power transformer HT/B+ voltages
  137. Help with cathode follower circuit
  138. RH84 bias change whith different el84 is use
  139. No more power transformers?
  140. K-502 Filament supply (or K-12M)
  141. **LOL** Chinese surround sound amp identification
  142. Tubelab SE driver gain
  143. MOSFET for power drive for low powered 845
  144. Aikido line & phono Guru's advice for a newbie pls
  145. Need Tube kits of above 75W Single Ended Class A amp
  146. First Project: 300B SET Monoblocks
  147. Where do you get those cool layout diagrams?
  148. Simple SE grounding -- metal spacers/standoffs?
  149. My Simple SE via Akihabara
  150. Power-On Time Delay Circuit
  151. GM-70 Build Issues
  152. Blue glass inside tubes
  153. Ruby Tuesdays
  154. Wich valve to start?
  155. Tubes that have round/curved plates. . .
  156. Calculating current capacity?
  157. AKAI 1710W R2R, OPT Question?
  158. Ringed Tube Grills / Guards ?
  159. Recommend me a warm, smooth sounding 6922, 6DJ8, ECC88 or equivalent
  160. Please help identify this tube - Shuguang 6922?
  161. Dedicated 6.3v filament transformer 240v primary
  162. can someone check this thread please
  163. Amp refurbishing question.....
  164. Tube mounting position
  165. 6N6P - recommended operating point
  166. Interstage transformer questions
  167. Help identifying resistor value
  168. New Audio Note M10
  169. K501 vs K12M
  170. what are these (i hope cheap) resistors ?
  171. Potentiometer value for 6SL7 input
  172. PSU Designer II question
  173. Lost Thread-High VOltage Regulated Power Supply
  174. 6B4G schematic - opinions please!!
  175. Plate current Question
  176. rh84 bias question.
  177. On/off LED wiring question
  178. Stabilized wood
  179. Heater to Cathode max voltage specs, including signal swings?
  180. Any 9- pin rectifier tubes with separate cathodes?
  181. Final checkout problems with Tubelab SE
  182. 6G-A4 anyone have a datasheet?
  183. Bias Protection Resistors in DC Coupled Amp
  184. EL84 push pull
  185. pcb printing companies
  186. Help! tube amp burnt?
  187. 43% UL connections
  188. Help with CATHODE resistor value on 6BM8 PP Amp
  189. SE EL34 schematic HELP: from two 6SL7's to One?
  190. no choke and transformers ratings
  191. Value of Resistors of EL34
  192. bass preamp redux
  193. Power Transformer spec questions. Will it work or burn up?
  194. These Hong Kong amps have me bummed
  195. Looking for a cheap dual pentode
  196. Adding panel meters to Simple SE?
  197. Building a 12B4 Line Stage
  198. Speaker sounds blown...but isn't
  199. Static noise in K-16LS
  200. Scratchy clicky noise coming from homemade 6L6 tube amp
  201. Rowe AMI jukebox amp
  202. Does this power supply make any sense to you?
  203. Zener Diode Question
  204. 829B as LTP?
  205. Need a little help with Aikido 6n1p/6n6p
  206. Power switch location..
  207. Mini Millet (starving student) and iPod??
  208. valve preamp for quad 303
  209. Paging Wavebourn - article on Russian caps...
  210. I'm about to drive a stake thru the heart of my Aikido linestage
  211. questions on Mikael Abdellah circuit optimized for EL34 triode operation
  212. Model 16LS Stereo Integrated Tube Amplifier
  213. hum on pre-amp when volume is turned up
  214. 813 RCA amplifier - 25w, class A1, single ended,2 tubes,Rout~1ohm
  215. Interesting circuit, filter question.
  216. Choke Voltage ratings
  217. Hole drills
  218. Major amp circuit redesign- need some expert advice
  219. Daft Hybrid Amp
  220. 6n18-v tube amp
  221. Old big/long plate 12AX7's & 12AT7's
  222. in progress
  223. JTM45 clone
  224. A good tube amplifier power supply
  225. Anyone compared electra-print SE:PP interstages to electra-print PSA-2 autoformers
  226. El34 Se
  227. Question on choke
  228. Simple SE output transformer: James or Edcor?
  229. Looking for beter EL34/6CA7 tubes for C-J MV55 amp
  230. SET tube replacement
  231. Some kind of buffer/preamp for my SS guitar amp fx loop
  232. VALVOLOZZO triode amp with toroids output trafo...help me
  233. Old amp kit making noise and its getting OLD.
  234. Another Tube pre query !
  235. Simple SE aux capacitor
  236. do 6h30 glow at the top only
  237. canadian source for triad choke?
  238. Fork vs. Sleeve Terminal Octal Sockets.
  239. Step down grid choke vs. interstage transformer
  240. Who knows James 6123HS parameters? Or where to ask
  241. Advantage of a FET-BJT CCS vs BJT only
  242. Question - PCB Design with Multisim/Ultiboard
  243. Trouble choke loading tube in regulated supply
  244. PSUD newbie: modeling Tubelab SE
  245. Bassman Schematic Alterations
  246. Fixed Bias adjustment
  247. web resource for tube pricing?
  248. Need help on Kenwood KR 7070
  249. 110v or 220v, how can you tell?
  250. Calling UK builders Simple SE, Pre & Phono advice